64123632146 has 24 divisors (see below), whose sum is σ = 112601891916. Its totient is φ = 27306508320.

The previous prime is 64123632121. The next prime is 64123632151.

64123632146 is nontrivially palindromic in base 10.

64123632146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63098928025 + 1024704121 = 251195^2 + 32011^2 .

It is a super-2 number, since 2×64123632146² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2068445 + ... + 2099216.

Almost surely, 2^64123632146 is an apocalyptic number.

64123632146 is a deficient number, since it is larger than the sum of its proper divisors (48478259770).

64123632146 is a wasteful number, since it uses less digits than its factorization.

64123632146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167834 (or 4167827 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The spelling of 64123632146 in words is "sixty-four billion, one hundred twenty-three million, six hundred thirty-two thousand, one hundred forty-six".